This illustrates a point we have made repeatedly: the supposed increase in global temperatures in recent decades is largely due, not to raw temperature data, but rather to adjustments to that data that are made by global warming zealots who, in many instances, have an enormous financial interest in propagating the AGW theory. Watts illustrates the point (which he makes more gently than I just did) with this chart. It shows temperature data from the Darwin, Australia airport from 1880 to the present. Based on actual temperature measurements, it has been getting cooler in Darwin. But adjustments to the raw data create a fictitious warming trend